Need help on part 2 pls leave some answer

The correct answer would be -

Punnett square is given below and on the base of the result of Punnett square, Millie should mate with Denver to get three different colors of puppies.

Explanation:

The question says that Millie has a genotype BB*, which is a combination or heterozygous condition of dark brown allele B and white allele B*, now cross with Denver (light brown color):

Cross 1:

         B      B*

 B    BB   BB*

  B*  BB* B*B*

the results is : 25% dark brown, 50% light brown and 25% white.

cross 2: with Charley (white color)

    B     B*

B* BB*  B*B*

B* BB*  B*B*

there is only white and light brown puppies produced

Thus, the correct answer is - Denver.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.